UsdImagingDrawModeSceneIndex Class Reference

A scene index replacing geometry based on the draw mode. More...

Inheritance diagram for UsdImagingDrawModeSceneIndex:

Public Member Functions
USDIMAGING_API HdSceneIndexPrim	GetPrim (const SdfPath &primPath) const override
	Returns a pair of (prim type, datasource) for the object at primPath. More...
USDIMAGING_API SdfPathVector	GetChildPrimPaths (const SdfPath &primPath) const override
	Returns the paths of all scene index prims located immediately below primPath. More...
Public Member Functions inherited from HdSingleInputFilteringSceneIndexBase
HD_API std::vector< HdSceneIndexBaseRefPtr >	GetInputScenes () const final
Public Member Functions inherited from HdSceneIndexBase
HD_API void	AddObserver (const HdSceneIndexObserverPtr &observer)
	Adds an observer to this scene index. More...
HD_API void	RemoveObserver (const HdSceneIndexObserverPtr &observer)
	Removes an observer from this scene index; the given observer will no longer be forwarded notices. More...
HdDataSourceBaseHandle	GetDataSource (const SdfPath &primPath, const HdDataSourceLocator &locator) const
	A convenience function: look up the object at primPath, and if successful return the datasource at locator within that prim. More...
Public Member Functions inherited from TfRefBase
size_t	GetCurrentCount () const
	Return the current reference count of this object. More...
bool	IsUnique () const
	Return true if only one TfRefPtr points to this object. More...
const TfRefCount &	GetRefCount () const
void	SetShouldInvokeUniqueChangedListener (bool shouldCall)
Public Member Functions inherited from TfWeakBase
	TfWeakBase (const TfWeakBase &)
const TfWeakBase &	__GetTfWeakBase__ () const
const TfWeakBase &	operator= (const TfWeakBase &)
void	EnableNotification2 () const
TF_API void const *	GetUniqueIdentifier () const

Static Public Member Functions
static USDIMAGING_API UsdImagingDrawModeSceneIndexRefPtr	New (const HdSceneIndexBaseRefPtr &inputSceneIndex, const HdContainerDataSourceHandle &inputArgs)
	inputArgs unused for now. More...
Static Public Member Functions inherited from TfRefBase
static TF_API void	SetUniqueChangedListener (UniqueChangedListener listener)

Protected Member Functions
	UsdImagingDrawModeSceneIndex (const HdSceneIndexBaseRefPtr &inputSceneIndex, const HdContainerDataSourceHandle &inputArgs)
void	_PrimsAdded (const HdSceneIndexBase &sender, const HdSceneIndexObserver::AddedPrimEntries &entries) override
void	_PrimsRemoved (const HdSceneIndexBase &sender, const HdSceneIndexObserver::RemovedPrimEntries &entries) override
void	_PrimsDirtied (const HdSceneIndexBase &sender, const HdSceneIndexObserver::DirtiedPrimEntries &entries) override
Protected Member Functions inherited from HdSingleInputFilteringSceneIndexBase
HD_API	HdSingleInputFilteringSceneIndexBase (const HdSceneIndexBaseRefPtr &inputSceneIndex)
const HdSceneIndexBaseRefPtr &	_GetInputSceneIndex () const
	Returns the input scene. More...
Protected Member Functions inherited from HdSceneIndexBase
HD_API void	_SendPrimsAdded (const HdSceneIndexObserver::AddedPrimEntries &entries)
	Notify attached observers of prims added to the scene. More...
HD_API void	_SendPrimsRemoved (const HdSceneIndexObserver::RemovedPrimEntries &entries)
	Notify attached observers of prims removed from the scene. More...
HD_API void	_SendPrimsDirtied (const HdSceneIndexObserver::DirtiedPrimEntries &entries)
	Notify attached observers of datasource invalidations from the scene. More...
HD_API bool	_IsObserved () const
	Returns whether the scene index has any registered observers; this information can be used to skip work preparing notices when there are no observers. More...
Protected Member Functions inherited from TfWeakBase
TfRefPtr< Tf_Remnant >	_Register () const
template<class T >
TfRefPtr< Tf_Remnant >	_Register (T *tempRmnt) const
bool	_HasRemnant () const

Additional Inherited Members
Public Types inherited from TfRefBase
typedef void(*	UniqueChangedFuncPtr) (TfRefBase const *, bool)

Detailed Description

A scene index replacing geometry based on the draw mode.

Inspects a prim's values for drawMode and applyDrawMode (see UsdImagingModelSchema). If the drawMode is valid and not the default and applyDrawMode is true, the prim and all its descendents are replaced by stand-in geometry specified by the draw mode.

Note that the material that ensures the correct texture is used on each face is using glslfx nodes and thus only works properly in Storm.

Using a UsdPreviewSurface instead (so that it works accross different renderers) probably requires breaking up the geometry into several pieces.

Definition at line 51 of file drawModeSceneIndex.h.

Member Function Documentation

GetChildPrimPaths()

USDIMAGING_API SdfPathVector GetChildPrimPaths ( const SdfPath &  primPath ) const

overridevirtual

Returns the paths of all scene index prims located immediately below primPath.

This function can be used to traverse the scene by recursing from SdfPath::AbsoluteRootPath(); such a traversal is expected to give the same set of prims as the flattening of the scene index's PrimsAdded and PrimsRemoved messages. This function is expected to be threadsafe.

Implements HdSceneIndexBase.

GetPrim()

USDIMAGING_API HdSceneIndexPrim GetPrim ( const SdfPath &  primPath ) const

overridevirtual

Returns a pair of (prim type, datasource) for the object at primPath.

If no such object exists, the type will be the empty token and the datasource will be null. This function is expected to be threadsafe.

Implements HdSceneIndexBase.

New()

static USDIMAGING_API UsdImagingDrawModeSceneIndexRefPtr New ( const HdSceneIndexBaseRefPtr &  inputSceneIndex, const HdContainerDataSourceHandle &  inputArgs  )

static

inputArgs unused for now.

In the future, we might use it to say that we want to break up the geometry and use UsdPreviewSurface to work across different renderers.

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The documentation for this class was generated from the following file:

• pxr/usdImaging/usdImaging/drawModeSceneIndex.h